From: "David S. Miller" <davem@redhat.com>
To: dank@kegel.com
Cc: linux-kernel@vger.kernel.org, zab@zabbo.net
Subject: Re: is CONFIG_PACKET_MMAP always a win?
Date: Thu, 21 Feb 2002 21:59:25 -0800 (PST) [thread overview]
Message-ID: <20020221.215925.41634293.davem@redhat.com> (raw)
In-Reply-To: <3C75A418.2C848B3F@kegel.com>
In-Reply-To: <3C75A418.2C848B3F@kegel.com>
From: Dan Kegel <dank@kegel.com>
Date: Thu, 21 Feb 2002 17:51:20 -0800
What's the best way to retrieve raw packets from the kernel?
a) use libpcap
...
b) use af_packet
...
c) enable CONFIG_PACKET_MMAP, use PACKET_RX_RING
If I understand it right, b costs one memcpy and one recv, and c costs
two memcpys. Which one wins?
"a" should be doing "c" when it is available in the kernel.
If not, get a newer copy of the libpcap sources, preferably
from Alexey's site:
ftp.inr.ac.ru:/ip-routing/
next prev parent reply other threads:[~2002-02-22 6:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-22 1:51 is CONFIG_PACKET_MMAP always a win? Dan Kegel
2002-02-22 2:33 ` Alan Cox
2002-02-22 5:59 ` David S. Miller [this message]
2002-02-22 6:45 ` Ben Greear
2002-02-22 8:37 ` Gianni Tedesco
2002-02-22 7:04 ` Dan Kegel
2002-02-22 14:04 ` Maciej W. Rozycki
2002-02-22 18:09 ` Jamie Lokier
2002-02-22 18:40 ` Alan Cox
2002-02-22 19:04 ` Jamie Lokier
2002-02-22 19:57 ` Alan Cox
2002-02-22 21:44 ` Mike Fedyk
2002-02-23 0:24 ` Alan Cox
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020221.215925.41634293.davem@redhat.com \
--to=davem@redhat.com \
--cc=dank@kegel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=zab@zabbo.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.